1. to be (followed by substantives only)
2. correct; right; true
3. (respectful acknowledgement of a command) very well
4. (adverb for emphatic assertion)

1. (before an adjective or verb) to the highest degree; (the) most ...; -est
2. (after 之 zhī) best or most extreme example (e.g. 世界之最 shìjièzhīzuì "the greatest in the world")

1. ancient
2. old
3. age-old

1. also; too; as well; (not ...) either
2. (used after a verbal or nominal expression X to indicate that X is an extreme or unexpected case) even (X)
3. (literary) particle having functions similar to 啊 a

1. (before an adjective or verb) to the highest degree; (the) most ...; -est
2. (after 之 zhī) best or most extreme example (e.g. 世界之最 shìjièzhīzuì "the greatest in the world")

1. modern times
2. modern age
3. modern era

1. of; ~'s (possessive particle)
2. (used after an attribute when it modifies a noun)
3. (used at the end of a declarative sentence for emphasis)
4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂兒的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
5. also pr. dì or di in poetry and songs

1. science
2. scientific knowledge
3. scientific
4. rational

classifiers: 門, 個, 種